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Interior · 993-INT-SWITCH-TRIM-RING-F1-0001

Aluminium switch trim ring, F1 reconstruction

ConceptNon-critical trim

Switch trim ring, F1 reconstruction. The pilot served to validate the CAD chain, the LPBF screening and the confrontation with a real route; the latter concluded that the part must be turned in a 6xxx grade and not sintered. It is neither an OEM geometry nor a part authorized for fitting.

Concept CAD rendering for 993-int-switch-trim-ring-f1-0001.
Not a photograph, not a render of a manufactured part, not evidence of fit or function.
Concept CAD orthographic views for 993-int-switch-trim-ring-f1-0001.
Front, side and top views of the same concept CAD. Dimensions describe the model; fit on the car remains unverified.

The design

Vehicle
Porsche 993, 1994–1998
Variants
993 all models per supplier to confirm
Porsche part numbers
Not recorded
Category
Interior trim
Geometry basis
Estimated
Preferred process
CNC machining
Other candidate processes
Laser powder-bed fusion (metal printing)
Material
EN AW-6063 T6 retained for bright anodizing; EN AW-6061 T6 as fallback if the turner refuses
Material standard
EN 755-2 for the bar; original grade still unidentified

Known limits

  • The continuous conical inner profile is an F1 hypothesis to be replaced by a measurement.
  • The master carries sharp edges and no tolerance; both remain to be decided.
  • The OEM opening and the clearance or interference condition are not measured: the outer diameter is taken from a sales page.
  • The aluminum grade of the original product is unknown; 6063 T6 is a choice of the repository, not an identification.
  • The STEP model is neither dimensionally reviewed, nor fitted, nor tested on a vehicle.

Post-processing it would need

  • Finish turning, target Ra 0.8 µm on visible faces
  • Edge chamfers or radii to be decided, then added to the model
  • Clear decorative sulfuric anodizing, layer growth to be subtracted from the fit dimension

What a supplier would have to provide

  • Material certificate and metallurgical temper of the bar
  • Tolerance actually held on the outer diameter
  • Anodizing thickness obtained and its scatter
  • Quote for 6061 T6 alongside, with what the appearance loses
  • Dimensional inspection of the four dimensions and the axial profile

Sources